I need advice!

Danielle • :)
I'm currently on the coil (marina) and have been for about 2 months, maybe a little more. I know that there is a very unlikely chance of getting pregnant with the coil but iv had baby fever for a while now and i overthink things a lot. I had a period last month but I am 3 days late this month, I didn't think anything of it because the coil can stop periods. However I also feel very nauseous and my breasts have been extremely sore for about two weeks... is it just hormones?